body {
  background: #78b8f5 url("../../imgs/login/login-bg.jpg") no-repeat left top / cover;
  /* 内部登录框 */
}
body .login-containt {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 420px;
  min-height: 500px;
  /* 登录标题 */
  /* 登录表单 */
}
body .login-containt h3 {
  background-color: red;
}
body .login-containt h3 a {
  display: block;
  text-indent: -999999px;
}
body .login-containt form {
  width: 400px;
  margin: 0 auto;
  min-height: 400px;
  background-color: #ffffff;
  box-shadow: 0 0 3px #ccc;
}
